#include<stdio.h>
int main()
{
	char cGrade;
	printf("please enter your grade\n");
	scanf("%c",&cGrade);
	printf("Grade is about:");
	switch(cGrade)
	{
				case'A':
			printf("120~150\n");
			break;
		case'B':
			printf("90~120\n");
			break;
		case'C':
			printf("70~90\n");
			break;
		case'D':
	       printf("0~60\n");
			break;
		default:
			printf("you enter the char is wrong!\n");
			break;
	}
	return 0;
} 
